Shaft-coupling.



tuinman raLTrN, or FLORENCE,

ARIZONA, ASSIGNOR TO LILLIE C. DURHAM, OF RED ROCK, ARIZONA.

SHAFT-COUPLING'.

Application filed July 6, 1915.

Shaft-Coupling, of which the following isv a. specification. l

.My invention relates to a shaft coupling, the especial object of my invention being to provide a shaft coupling having a universal joint and which is' adapted to noiselessly transmit power from one shaft to another atv dillerent angles and also at changeable angles.

lt is a further' object of my invention to provide means for maintaining respective shaft couplings in a predetermined spaced relation, and to removable bearings or bushes which may be replaced when Worn.

lt is an object of my invention to provide the novel combination and arrangement of parts more fully hereinafter disclosed, in connection with the accompanying drawings, illustrative of my invention, in whichv g Figure 1 is a plan of the invention, shown partly in section; Fig. 2 is a section on line 2 2 of Fig. l; Fig. 3 is an end view of Fig. (i with member ll removed; Fig. Ll is a detail view ofthe shouldered ccnterpins; Fig. 5 is a detail vievv of 'pivoted pins 6; and Fig. (i is a view on line (5-6 of Fig. l.

Similar numerals indicate isimilar'parts throughout the views.

Referring to the accornpanying` dravvings,4 I provide likeishaft couplings 9, having a` hardened outer casing` l for use of belting,

a central bush o, and a plurality of spaced outer bushes 8, as illustrati-2d in Fig. Slid-v ing and revolving 1n bushes 2i of the rcspective shaft couplings are'zuljustable pins (5, pivoted at 7 to permit of adjustment to any desired angle. (leuter pin 3 is pivoted at 4 to permit of like adjustment. A universal joint shaft coupling is thus provided, the pivoted pins permitting of adjustment to changeable angles. Center pin l is provided with annular shoulders Z ,to bear against the end of the shaft couplings and reduce friction on the bushes in which pins 6 travel.

l may provide means for connecting the outer end of a shaft coupling to a Wheel, and for this purpose employ a plurality of threaded studs 10 extending from the end of the coupling member 9, as illustrated in F 1g.

Specification of Letters Patent.

Patented Die-m28., 31915 serial no. 38,252.

3, to engage in corresponding orifices in plate 11, which is' secured by bolts 13, as .shown in Fig. G, center shaft or hub l2 being'rlgidl'y secured to plate 1l, which in turn 1s r1gidlv fastened to the coupling shaft, as above described. t

The operation of the device will be readily understood from the accompanying drawings. The pins 6 slide in sequence land revolve about the center pin 3 as the coupling shafts revolve. Shoulders 2 on center pin 3 maintain' the coupling shafts in the predetermined spaced relation to each other and reduce friction on the shaft bearings. Bushes 8 are frictionally engaged in the respective coupling 'shafts and may be removed and replaced when worn. The pivoted connection of the pin members permits of the adjustment of the respective shafts to any angle and to changeable angles, constituting@ universal joint shaft coupling. The device is noiseless in operation.

I may provide a secondary form of the invention, adapted 'only for stationary angles of the respective shafts, in which integral, unpivoted pin members are substituted in place of the pivoted pins of my improved form of coupling hereinbefore described.

ll'he foregoing description of the primary form of my invention applies also to the secondary form. save that in the secondary form the pin members are integral and Without pivots, the pin members being cylindrical throughout.

,lVhat l claim is:

l. YIn a universal joint shaft coupling, ad-

justable shaft coupling members each havingr a longitudinal central bush and a plu rality of longitudinal spaced outer bushes, pivoted center pins revolubly mounted in the central bushes of the respective coupling members and a. plurality of pivoted outer pins slidably and revolubly mounted in the respective outer bushes of the coupling members.

A universal joint shaft coupling having in combination shaft coupling members each having a central bush and a plurality of spaced outer bushes correspondingly positioned lengthwise of the respective shafts, pivoted center pins revolubly mounted in the central bushes andv having annular shoulders adapted to bear against the ends of the respective coupling members to maintain the same in a predetermined spaced relation, and a plurality of spaced pivoted outer pins slidably and revolubly mounted in the outer bushes of the respective coupling members.

3. In a device of the class described, shaft coupling members having hardened outer casings, bushes longitudinally positioned in the respective shaft coupling members one of which is centrally disposed in each coupling member, a pivoted center pin having annular Ashoulders to engage against the adjacent ends of the respective coupling members tomaintain the same in predetermined relation, outer pins slidably and revolubly mounted in the outer bushes of the respec- 15 tive coupling members, and'meansr rigidly mounted at the outer end of one of the shaft members adapted for securing a hub thereto, substantially as set forth.

WILLIAM FALTIN,

Witnesses: v

VALTER WlNER, H. R. STPHENS. 

